Bidirectional wireless power transmission
AssigneeQUALCOMM Incorporated
InventorsNigel P. Cook, Lukas Sieber, Hanspeter Widmer
Life of this patent
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Abstract
Exemplary embodiments are directed to wireless power transfer. A wireless power transceiver and device comprise an antenna including a parallel resonator configured to resonate in response to a substantially unmodulated carrier frequency. The wireless power transceiver further comprises a bidirectional power conversion circuit coupled to the parallel resonator. The bidirectional power conversion circuit is reconfigurable to rectify an induced current received at the antenna into DC power and to induce resonance at the antenna in response to DC power.
Claims21
A wireless power transceiver, comprising:
- an antenna including a resonator configured to resonate in response to a substantially unmodulated carrier frequency;
- and
- a bidirectional power conversion circuit coupled to the parallel resonator, the bidirectional power conversion circuit reconfigurable to rectify an induced current received at the antenna into DC power and to generate an induced current at a resonance frequency into the antenna from stored DC power.
A device, comprising:
- a battery for storing and donating power;
- and
- a wireless power transceiver coupled to the battery and configured to store wirelessly received power in the battery received from a resonant magnetic near-field through a bidirectional power conversion circuit and to wirelessly transmit power from the battery through the bidirectional power conversion circuit to generate a resonant magnetic near-field.
A method for transceiving wireless power, comprising:
- receiving an induced current from an antenna resonating in response to a magnetic near-field and rectifying the induced current into DC power through a bidirectional power conversion circuit when the bidirectional power conversion circuit is configured in receive mode;
- and
- generating an induced current at a resonant frequency into the antenna from stored DC power through the bidirectional power conversion circuit and generating a magnetic near-field from the antenna when the bidirectional power conversion circuit is configured in transmit mode.
A wireless power transceiver, comprising:
- means for receiving an induced current from an antenna resonating in response to a magnetic near-field and means for rectifying the induced current into DC power through a bidirectional power conversion circuit when the bidirectional power conversion circuit is configured in receive mode;
- and
- means for generating an induced current at a resonant frequency into the antenna from stored DC power through the bidirectional power conversion circuit and means for generating a magnetic near-field from the antenna when the bidirectional power conversion circuit is configured in transmit mode.
Dependencies are inferred from the claim text.